1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (C) 2020-2023 Intel Corporation
29 	struct ivpu_fw_info *fw = vdev->fw;  in ivpu_pm_prepare_cold_boot()
34 	fw->entry_point = fw->cold_boot_entry_point;  in ivpu_pm_prepare_cold_boot()
39 	struct ivpu_fw_info *fw = vdev->fw;  in ivpu_pm_prepare_warm_boot()
40 	struct vpu_boot_params *bp = fw->mem->kvaddr;  in ivpu_pm_prepare_warm_boot()
42 	if (!bp->save_restore_ret_address) {  in ivpu_pm_prepare_warm_boot()
47 	ivpu_dbg(vdev, FW_BOOT, "Save/restore entry point %llx", bp->save_restore_ret_address);  in ivpu_pm_prepare_warm_boot()
48 	fw->entry_point = bp->save_restore_ret_address;  in ivpu_pm_prepare_warm_boot()
101 	struct ivpu_device *vdev = pm->vdev;  in ivpu_pm_recovery_work()
106 	ret = pci_try_reset_function(to_pci_dev(vdev->drm.dev));  in ivpu_pm_recovery_work()
107 	if (ret == -EAGAIN && !drm_dev_is_unplugged(&vdev->drm)) {  in ivpu_pm_recovery_work()
112 	if (ret && ret != -EAGAIN)  in ivpu_pm_recovery_work()
115 	kobject_uevent_env(&vdev->drm.dev->kobj, KOBJ_CHANGE, evt);  in ivpu_pm_recovery_work()
120 	struct ivpu_pm_info *pm = vdev->pm;  in ivpu_pm_schedule_recovery()
133 	if (atomic_cmpxchg(&pm->in_reset, 0, 1) == 0) {  in ivpu_pm_schedule_recovery()
135 		queue_work(system_long_wq, &pm->recovery_work);  in ivpu_pm_schedule_recovery()
143 	unsigned long timeout;  in ivpu_pm_suspend_cb()  local
147 	timeout = jiffies + msecs_to_jiffies(vdev->timeout.tdr);  in ivpu_pm_suspend_cb()
150 		if (time_after_eq(jiffies, timeout)) {  in ivpu_pm_suspend_cb()
152 			return -EBUSY;  in ivpu_pm_suspend_cb()
195 	if (!ivpu_hw_is_idle(vdev) && vdev->pm->suspend_reschedule_counter) {  in ivpu_pm_runtime_suspend_cb()
197 			 vdev->pm->suspend_reschedule_counter);  in ivpu_pm_runtime_suspend_cb()
198 		pm_schedule_suspend(dev, vdev->timeout.reschedule_suspend);  in ivpu_pm_runtime_suspend_cb()
199 		vdev->pm->suspend_reschedule_counter--;  in ivpu_pm_runtime_suspend_cb()
200 		return -EAGAIN;  in ivpu_pm_runtime_suspend_cb()
207 	if (!vdev->pm->suspend_reschedule_counter) {  in ivpu_pm_runtime_suspend_cb()
214 	vdev->pm->suspend_reschedule_counter = PM_RESCHEDULE_LIMIT;  in ivpu_pm_runtime_suspend_cb()
242 	ret = pm_runtime_resume_and_get(vdev->drm.dev);  in ivpu_rpm_get()
243 	if (!drm_WARN_ON(&vdev->drm, ret < 0))  in ivpu_rpm_get()
244 		vdev->pm->suspend_reschedule_counter = PM_RESCHEDULE_LIMIT;  in ivpu_rpm_get()
251 	pm_runtime_mark_last_busy(vdev->drm.dev);  in ivpu_rpm_put()
252 	pm_runtime_put_autosuspend(vdev->drm.dev);  in ivpu_rpm_put()
259 	pm_runtime_get_sync(vdev->drm.dev);  in ivpu_pm_reset_prepare_cb()
261 	ivpu_dbg(vdev, PM, "Pre-reset..\n");  in ivpu_pm_reset_prepare_cb()
262 	atomic_inc(&vdev->pm->reset_counter);  in ivpu_pm_reset_prepare_cb()
263 	atomic_set(&vdev->pm->in_reset, 1);  in ivpu_pm_reset_prepare_cb()
268 	ivpu_dbg(vdev, PM, "Pre-reset done.\n");  in ivpu_pm_reset_prepare_cb()
276 	ivpu_dbg(vdev, PM, "Post-reset..\n");  in ivpu_pm_reset_done_cb()
280 	atomic_set(&vdev->pm->in_reset, 0);  in ivpu_pm_reset_done_cb()
281 	ivpu_dbg(vdev, PM, "Post-reset done.\n");  in ivpu_pm_reset_done_cb()
283 	pm_runtime_put_autosuspend(vdev->drm.dev);  in ivpu_pm_reset_done_cb()
288 	struct device *dev = vdev->drm.dev;  in ivpu_pm_init()
289 	struct ivpu_pm_info *pm = vdev->pm;  in ivpu_pm_init()
291 	pm->vdev = vdev;  in ivpu_pm_init()
292 	pm->suspend_reschedule_counter = PM_RESCHEDULE_LIMIT;  in ivpu_pm_init()
294 	atomic_set(&pm->in_reset, 0);  in ivpu_pm_init()
295 	INIT_WORK(&pm->recovery_work, ivpu_pm_recovery_work);  in ivpu_pm_init()
300 		pm_runtime_set_autosuspend_delay(dev, -1);  in ivpu_pm_init()
311 	cancel_work_sync(&vdev->pm->recovery_work);  in ivpu_pm_cancel_recovery()
316 	struct device *dev = vdev->drm.dev;  in ivpu_pm_enable()
326 	pm_runtime_get_noresume(vdev->drm.dev);  in ivpu_pm_disable()
327 	pm_runtime_forbid(vdev->drm.dev);  in ivpu_pm_disable()